Brickkiln



Jan. 1, 1924 B. F. CANAVERA BRICKKILN "'2 Sheets-Sheet 1 Filed Jan. 2,

EF @Maya witness Jan. 1, 1924 B. F. CANAVERA BRICKKILN 1923 2 Sheets-Sheet 2 Filed Jan. 2,

Patented Jan. 1, 1924. 'y

BnraIsT-En Canavese; on s'r. LOUIS, MIssoUnI.

' 1" BRICKKILN.

application ined4 Janary 2; 1923. seriainofsmasa.

T0 all 'whom t 'may concern." v f Be it .lniown that I, BAPTISTE F. Gianmaria, a citizen f the United States, residing-at St. Louisa-iid rState of Missouri, have invented certa-in new and useful Improvement-s in Brickkilns; and I do declare the lffollow'- ing to be 'a ful-l, clear, and exact description of the invention, such `as will 'enable others skilled i'n the art to which `it appertains to make and use the same.

My invention has for its object to generally improve upon and simplify Vthe con struction shown b my United States Patent No. 1,117,783 of ovember 17, 1914.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawings.

Figure l is a horizontal sectional View partly lin elevation.

igure 2 is a vertical transverse sectional view as indicated by line 2-2 of Fig. 1. v

Figure 3 is a longitudinal sectional View through the center of the kiln, as indicated by line 3-3 of Fig. 1.

In the drawings -above, briefly described, the numeral 1 designates a straight central wall whose lower portion 2 is solid, with the exception that it is provided with vertically spaced passages 3, the upper portion however of said wall being hollow, in order to provide a longitudinal flue or smoke gallery 4 having a suitable stack 5. The inner side of the crown 6 of the sleeve, preferably inclines to the stack in the manner shown in Fig. 3 or in a similar way, in order to increase the draft of the kiln.

A continuous tunnel 7 surrounds the central wall 1 in spaced relation therewith and the space between said tunnel and wallis filled with Vsand or the like as indicated at 8. A continuous wall 9 preferably surrounds the tunnel 7 and the space between this tunnel and wall is also filled with sand or other suitable insulator as indicated at 10.

The outer side of the tunnel 7 and the wall 9 are formed with spaced openings 11 through which the ware may be taken into the tunnel and removed therefrom. These' openings are also used for building temporary fires to serve as pilots for powdered coal or similar fuel which may be fed to the tunnel through vertical openings 12 inits crown.`

At a suitable time, the openings 11 are sealed by spaced inner and outer walls12and 12 which may be builttherein from -brick'or any other suitable materiah the space between eachl wall 12V and the adjacentwall `13'being lled Ywith sand. For supplying the sandte' the'several spaces, I provide Va plurality lof uprighttubula-r-sand hoppers 14 over the several openings 11.

The bottom of the tunnel 7 i'sformed with a plurality of down-draft flues .15 which discharge into the passages 3, communication betweenA these passages and theiiue 4 being controlled vby appropriate dampers or valves 16 which .may well have operating rods 17 rising through the crown 6. At times, when the valves 16 are closed. it is desirable to have the 'draft froinfthe tunnell 7, pass through the fuel feeding openings p 12 and from them 'to the flue 4. In order that this maybe done, I provide the crownr 6 with a plurality ofopenings 18l and employ trans# y verse conduits 19 Y resting removably upon the crowns of the tunnel 7 and the flue 4, the

youter ends of said conduits being in communication with the openings 12, while the inner ends thereof open into the openings 18.

Vhen these conduits are not in use, they may be moved out of operative position.

In operating the kiln, the ware is stacked in the tunnel 7 and the pilot fires are built at the openings 11. When these lires have gained suflicient headway, coal dust or similar fuel is fed to the tunnelA through the openings 12 to generate the lrequisite heat for burning the ware. The openings 11 may then be closed by the walls 12 and 13 and the Sand insulator between them. During oner stage of the burning operation, the draft may take place through the liues 15 and passages 3 to the flue 4, the valves 16 being then opened. At another stage of the burning operation, however, thevalves 16 are closed r and the conduits 19 are disposed-in operative position so that the products of combustion pass upwardly through the yopenings 12, then inwardly through the conduits, and will enter the flue 4 through the openings 18. i

By employing the construction shownV and described, the kiln shown by my former patent is generally improved upon and simplied and while excellent results may be obtained from the details disclosed, it is to be understood that within the scope of the invention as claimed, minor changesr may be made.

The numerals 2O merely designate suitable clean-out manholes for the flue 4.

I claim:

l. A kiln comprising a Ycentral wall whose upper portion is hollow and forms a horizontal iue leading toa stackythe lower portion of said wall having vertical passages in valved eommuncation with the flue andthe upper portion of the wall having inlet passages; a continuous tunnel surrounding said central wall and having down-draftflues inits bottom discharging into said vertical passages, theouter'wall `of said tunnel having temporary re openings while the crown of said tunnel is formed with fuel feeding openings; and

farehed transversely disposed conduits rest- `thevhorizontal flue when said conduits lare lin place.

2. Akiln comprising a burning chamber having an opening Vin its outer wall through which the ware is oarriedinto and removed :from saijdchamber, sa1dwallhav1ng`a sand hopper over said `opening ior discharging `sand into spacey between inner andvouter ltemporary walls built up in said openingto close the same; vj I A f .j 'In' testimony whvr reof I have. hereunto kaffixed mysignature.

BAPTISTE F. loNAvnnA; Y y 

